中文摘要：

用丝网印刷法在氧化铝衬底上制备了Ho3＋掺杂的Ba0.8Sr0.2TiO3（BST）厚膜。XRD谱表明,随着Ho^3＋掺杂摩尔分数从0.5%增加到2.0%,BST厚膜的晶格尺寸先增大后减小。在514nm的氩离子激光激发下,样品均出现了中心波长为549,650,753nm的发光带,分别对应于Ho^3＋离子的（5F4,5S2）→5I8、5F5→5I8和（5F4,5S2）→5I7的跃迁。在800nm的激光激发下,样品均出现了蓝色和绿色的上转换发光,并分析了蓝色和绿色上转换发光的发光机理。

英文摘要：

Ho3＋ doped Ba0.8Sr0.2TiO3（BST） thick films were fabricated on alumina substrates by the screen printing techniques.XRD patterns show that the lattice parameters of BST films have a maximum value when Ho3＋ concentration is 1.0%.Under 514 nm Ar＋ laser excitation,the emission peaks lacate at about 549,650 and 753 nm corresponding to（5F4,5S2）→5I8,5F5→5I8 and（5F4,5S2）→5I7 transition of Ho3＋ ion.Under 800 nm laser excitation,blue and green up-conversion luminescence was observed.The blue and green up-conversion luminescence mechanisms were also discussed.The results show that the Ho3＋∶BST materials are prospective candidates for applications in new photoelectric devices.